This reminds me a bit of the Japanese "pointing and calling." With the standard disclaimer that I am sometimes a bit whimsically cruel ... I'm not particularly

This reminds me a bit of the Japanese "pointing and calling." With the standard disclaimer that I am sometimes a bit whimsically cruel ... I'm not particularly fond of extraverts and their habit of monopolizing the conversation, breaking in, preemptive interruptions when they pick up that you're about to say something, so I invented a game where I see how long I can keep them talking without them noticing I am not saying anything. No verbal interjections on my part are allowed (no aizuchi), only facial expressions, posture, and hand gestures. It's surprising how often one apparently gets away with it. I've heard, to my amazement (and amusement) that I'm a "good conversationalist."